Gamma-ray bursts at high and very high energies

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• 作者：Fré ; dé ; ric Piron ^{piron@in2p3.fr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Gamma-ray astronomy ; Gamma-ray bursts ; Relativistic jets
• 刊名：Comptes Rendus Physique
• 出版年：2016
• 出版时间：June-July 2016
• 年：2016
• 卷：17
• 期：6
• 页码：617-631
• 全文大小：3915 K

文摘

Gamma-Ray Bursts (GRBs) are extra-galactic and extremely energetic transient emissions of gamma rays, which are thought to be associated with the death of massive stars or the merger of compact objects in binary systems. Their huge luminosities involve the presence of a newborn stellar-mass black hole emitting a relativistic collimated outflow, which accelerates particles and produces non-thermal emissions from the radio domain to the highest energies. In this article, I review recent progresses in the understanding of GRB jet physics above 100 MeV, based on Fermi observations of bright GRBs. I discuss the physical implications of these observations and their impact on GRB modeling, and I present some prospects for GRB observation at very high energies in the near future.